Contractor series cobalt bi-metal reciprocating saw blades. Lasts 10x longer. Unique nitro hardening process for optimal strength and blade life. Fused cobalt teeth. 5% cobalt teeth fused to flexible, shatterproof body for rugged cutting. When compared to standard carbon alloy blades. 1/2" universal shank fits all popular U.S.A. reciprocating saws. Ferrous/non-ferrous metal over 18 ga. -1/8", PVC and fiberglass.

Product Features:

• Recip blade cobalt bi-metal. For use on metal, aluminum, PVC, fiberglass, ferrous/non-ferrous metal over 18 gauge-1/8".
• Contractor Series Cobalt Bi-Metal reciprocating saw blades are designed for contractor grade applications
• Each blade consists of cobalt alloy high speed steel teeth electron beam welded to a lower alloy backbone provide a flexible, high performance blade
• For ferrous and non-ferrous metal over 18 gauge - 1/8-Inch PVC and fiberglass
• Contractor Series blades have C66-67 Rockwell hardened teeth which operates up to 10 times faster than carbon alloy blades